Top VoIP Software for Windows Vista

All-in-one voice and text chat for gamers that's free, secure, and works on both your desktop and phone. Discord is always completely free to use with no gotchas. This means you can make as many servers as you want with no slot limitations. Encrypted...

Jitsi (64-Bit) is an audio or video and chat communicator that supports protocols such as SIP, XMPP/Jabber, AIM/ICQ, Windows Live, and Yahoo. Jitsi (64-Bit)can encrypt your calls using the innovative ZRTP. Show you're desktop to anyone with a...

3CX VOIP Phone System is an Office Phone System/IP PBX that completely replaces a proprietary PABX, supports standard SIP soft/hard phones from any vendor, VOIP service providers & traditional PSTN phone lines. Developed for Windows, it is easy to...

Develop SIP based webphone with your own GUI and brand very easily. VaxVoIP WebPhone SDK (Software Development Kit). It contains sample codes, technical manual, COM component and demo application. It is a complete package to develop a...

Jitsi is an audio or video and chat communicator that supports protocols such as SIP, XMPP/Jabber, AIM/ICQ, Windows Live, and Yahoo. Jitsi can encrypt your calls using the innovative ZRTP. Show you're desktop to anyone with a video-capable XMPP...

Jitsi is an audio or video and chat communicator that supports protocols such as SIP, XMPP/Jabber, AIM/ICQ, Windows Live, and Yahoo. Jitsi can encrypt your calls using the innovative ZRTP. Show you're desktop to anyone with a video-capable XMPP...

Skype is software that enables you to make free calls anywhere in the world. Skype uses P2P (peer-to-peer) technology to connect you with other users. It offers several features, including SkypeOut calling from Skype to regular and mobile phones...

Own your own Free Voice Chat Party Line that runs 24 hours a day. No phone numbers to call, a complete web based Party Line Script. Using the latest browser technology to deliver live free voice chat from PC's and cell phones from any place...

AsterSwitchboard is an operator panel for Asterisk PBX running on MS Windows clients. Call, answer, transfer, view the status of all connected extensions, intercept a call for another extension, display name and number of incoming calls, make a call...

sPortable, formerly known as Skype Portable, allows you to run Skype without needing to install it. sPortable lets you connect to others via instant message, audio conferencing, and video phone. It can also call regular phone lines from anywhere in the...